The world's largest observation wheel is 135 metres high. It provides a 30-minute, slow-moving 'flight' over London. Designed to reflect the elements of air, water, earth and time - the central theme is a circle of white light from within the rim which sweeps the skyline at 135 metres. The passenger capsules signifying 'time', is lit internally at the point of embarcation. Each high-tech capsule accommodating up to 25 people. The attraction has the capacity to handle 1,500 visitors every hour. The British Airways London Eye is a privately funded venture between British Airways, the Tussauds Group and London architects David Marks and Julia Barfield.